WO2024232000A1 - 車載用遮断装置 - Google Patents
車載用遮断装置 Download PDFInfo
- Publication number
- WO2024232000A1 WO2024232000A1 PCT/JP2023/017370 JP2023017370W WO2024232000A1 WO 2024232000 A1 WO2024232000 A1 WO 2024232000A1 JP 2023017370 W JP2023017370 W JP 2023017370W WO 2024232000 A1 WO2024232000 A1 WO 2024232000A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductive path
- unit
- current flowing
- vehicle
- negative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/10—Measuring sum, difference or ratio
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- This disclosure relates to an on-board cutoff device.
- Patent Document 1 discloses a leakage current detection device for detecting leakage current.
- the leakage current detection device includes a battery voltage sensor, a first series circuit, a second series circuit, a voltage divider, an analog-digital converter, and a control unit.
- the battery voltage sensor is configured to measure a battery voltage between a positive terminal and a negative terminal of the battery.
- the first series circuit includes a first resistor and a first switch connected in series between a first node connected to the negative terminal and a second node connectable to the chassis.
- the second series circuit includes a second resistor and a second switch connected in series between the second node and a third node connected to the positive terminal.
- the voltage divider includes a third resistor and a fourth resistor connected in parallel to the first series circuit and connected in series through a fourth node.
- the analog-digital converter is configured to generate a digital signal indicative of the voltage between the first node and the fourth node.
- the control unit is operably connected to the battery voltage sensor, the first switch, the second switch, and the analog-digital converter. The control unit determines a first detection voltage based on a digital signal at a first detection time point when a first leakage detection mode is being executed in which the first switch is controlled to an ON state and the second switch is controlled to an OFF state.
- the control unit determines a second detection voltage based on a digital signal at a second detection time point when a second leakage detection mode is being executed in which the first switch is controlled to an OFF state and the second switch is controlled to an ON state.
- the control unit determines a first insulation resistance between the positive terminal and the chassis and a second insulation resistance between the negative terminal and the chassis based on the battery voltage, the first detection voltage, and the second detection voltage.
- the control unit judges a leakage current of the battery based on the first insulation resistance and the second insulation resistance.
- Patent Document 1 is designed to detect leakage current while charging or discharging the battery is suspended, and is not suitable for rapid detection during charging or discharging of the battery.
- the configuration of Patent Document 1 requires the first switch and the second switch to be alternately switched on, but detection tends to take time due to the influence of a capacitor provided for noise suppression. As a result, when an attempt is made to cut off the current after a leakage current is detected, the cutoff is delayed.
- the purpose of this disclosure is to provide a technology that can quickly cut off the current flowing through a conductive path when a ground fault occurs during charging or discharging of an electric storage unit mounted on a vehicle.
- the vehicle-mounted cutoff device of the present disclosure is An in-vehicle circuit breaking device mounted on a vehicle including a power storage unit, and a conductive path provided between the power storage unit and an object that transfers electric power between the power storage unit and the power storage unit, a cut-off unit that is provided in the conductive path and switches from a permissive state that allows a current to flow through the conductive path to a cut-off state;
- the power supply has a switching unit that switches the interrupting unit to the interrupted state based on a comparison result between a current flowing through a positive electrode side conductive path included in the conductive path and a current flowing through a negative electrode side conductive path included in the conductive path.
- the technology disclosed herein can quickly cut off the current flowing through the conductive path when a ground fault occurs during charging or discharging of an electric storage unit mounted on a vehicle.
- FIG. 1 is a schematic diagram showing a vehicle including an on-board cutoff device and a charging device according to a first embodiment.
- An in-vehicle circuit breaker device mounted on a vehicle including a power storage unit, and a conductive path provided between the power storage unit and an object that transfers electric power between the power storage unit and the power storage unit, a cut-off unit that is provided in the conductive path and switches from a permissive state that allows a current to flow through the conductive path to a cut-off state; a switching unit that switches the interrupting unit to the interrupted state based on a comparison result between a current flowing through a positive electrode side conductive path included in the conductive path and a current flowing through a negative electrode side conductive path included in the conductive path.
- the vehicle-mounted circuit breaker can switch the circuit breaker to a cut-off state based on the comparison result between the current flowing through the positive conductive path and the current flowing through the negative conductive path. In other words, the vehicle-mounted circuit breaker can quickly cut off the current flowing through the conductive path when a ground fault occurs while the storage unit is being charged or discharged.
- the above-mentioned vehicle-mounted circuit breaker switches the circuit breaker to the cut-off state based on the difference rather than the ratio, allowing it to accurately determine that a ground fault has occurred while quickly cutting off the current flowing through the conductive path.
- the above-mentioned vehicle-mounted cutoff device can simplify the configuration for switching the cutoff section to the cutoff state based on the comparison result.
- the vehicle-mounted cutoff device can switch the cutoff section to the cutoff state when the difference accumulates to a certain extent over a specified period of time.
- the vehicle-mounted cutoff device can switch the cutoff section to the cutoff state when the square of the difference is accumulated to a certain extent over a specified period of time.
- Rthw is the thermal resistance of the conductive path (° C./W).
- Rw(0) is the resistance ( ⁇ ) of the conductive path at temperature To.
- ⁇ w is the temperature coefficient of resistance of the conductive path (/° C.).
- the vehicle-mounted cutoff device can switch the cutoff section to the cutoff state when Tw calculated using the difference exceeds a threshold value.
- the transfer target is a charging device connected to an inlet of the vehicle, the vehicle includes a voltage conversion unit that is provided between the inlet and the power storage unit and that boosts a voltage input from the inlet side and outputs the boosted voltage to the power storage unit side;
- the conductive path includes a first conductive path provided between the inlet and the voltage conversion unit, and a second conductive path provided between the voltage conversion unit and the power storage unit,
- the first conductive path includes a first positive-side conductive path that is a part of the positive-side conductive path, and a first negative-side conductive path that is a part of the negative-side conductive path,
- the switching unit switches the interrupter to the interrupted state based on a comparison result between a current flowing through the first positive electrode side conductive path and a current flowing through the first negative electrode side conductive path.
- the vehicle-mounted circuit breaker if a ground fault occurs in the second conductive path during a charging operation in which the input voltage from the charging device side is boosted by the voltage conversion unit to charge the storage unit, a difference occurs between the current flowing through the first positive-side conductive path and the current flowing through the first negative-side conductive path.
- the vehicle-mounted circuit breaker can switch the circuit breaker to a cut-off state based on the comparison result between the current flowing through the first positive-side conductive path and the current flowing through the first negative-side conductive path. In other words, the vehicle-mounted circuit breaker can quickly cut off the current flowing through the conductive path when a ground fault occurs while the storage unit is being charged.
- First Embodiment 1 shows a vehicle 10 including an on-board cutoff device 30 and a charging device 80.
- the vehicle 10 is a vehicle, such as an electric vehicle, that runs on a battery 11 as a power source.
- the battery 11 is charged by a charging device 80 external to the vehicle 10.
- the vehicle 10 includes a battery 11, an inlet 12, a voltage conversion unit 13, a conductive path R having a first conductive path 14 and a second conductive path 15, relays 16 and 17, a vehicle body 18, a reference conductive path 19, a control unit 20, and an on-board circuit breaker 30.
- Battery 11 corresponds to an example of a power storage unit.
- Battery 11 is, for example, a high-voltage battery that can supply power to a drive motor.
- the motor is a motor that powers the wheels of vehicle 10.
- the output voltage of battery 11 when fully charged is, for example, 800 V.
- Battery 11 may be composed of a secondary battery such as a lithium-ion battery, or may be composed of other types of storage batteries.
- the inlet 12 is connected to a charging device 80 outside the vehicle 10. Power is supplied to the inlet 12 from the charging device 80.
- the inlet 12 has a first terminal 12A, a second terminal 12B, and a connection portion 12C.
- the connection portion 12C includes a connection terminal.
- the charging device 80 corresponds to an example of a receiving object.
- the charging device 80 is a device that supplies, for example, a DC voltage of 400 V.
- the charging device 80 includes a first mating terminal 81 that is connected to the first terminal 12A, a second mating terminal 82 that is connected to the second terminal 12B, and a mating connection part 83 that is connected to the connection part 12C.
- the mating connection part 83 is configured to include a mating connection terminal.
- the charging device 80 includes a charger 84.
- the charger 84 converts AC power from a commercial power source or the like into DC power and outputs it.
- the charger 84 is configured, for example, as an off-board charger.
- the charging device 80 includes a positive supply path 85, a negative supply path 86, and a protective ground wire 87.
- the positive supply path 85 and the negative supply path 86 are electrical paths that supply power from the charger 84 to the inlet 12 side.
- One end of the positive supply path 85 is electrically connected to the positive terminal of the charger 84.
- the other end of the positive supply path 85 is electrically connected to the first mating terminal 81.
- One end of the negative supply path 86 is electrically connected to the negative terminal of the charger 84.
- the other end of the negative supply path 86 is electrically connected to the second mating terminal 82.
- One end of the protective ground wire 87 is grounded.
- the other end of the protective ground wire 87 is electrically connected to the mating connection part 83.
- the charging device 80 includes a first SPD 88 and a second SPD 89.
- the first SPD 88 and the second SPD 89 are surge protective devices.
- the first SPD 88 is provided between the positive supply path 85 and the protective ground wire 87.
- the first SPD 88 has a function of discharging an overvoltage generated in the positive supply path 85 to the protective ground wire 87.
- the second SPD 89 is provided between the negative supply path 86 and the protective ground wire 87.
- the second SPD 89 has a function of discharging an overvoltage generated in the negative supply path 86 to the protective ground wire 87.
- the charging device 80 has a plug (not shown). The plug is connected to the inlet 12. The charging device 80 supplies DC power to the inlet 12 via the plug.
- a voltage conversion unit 13 is provided between the inlet 12 and the battery 11.
- the voltage conversion unit 13 performs a conversion operation of converting the voltage input from the inlet 12 side and outputting it to the battery 11 side.
- the voltage conversion unit 13 performs a boost operation of boosting the voltage input from the inlet 12 side and outputting it to the battery 11 side.
- the voltage conversion unit 13 is configured, for example, by a DCDC converter.
- the conductive path R is provided between the charging device 80 and the battery 11.
- the conductive path R is formed of, for example, an electric wire or a bus bar.
- the conductive path R has a first conductive path 14 and a second conductive path 15.
- the first conductive path 14 is provided between the inlet 12 and the voltage conversion unit 13.
- the first conductive path 14 includes a first positive conductive path 14A and a first negative conductive path 14B.
- One end of the first positive conductive path 14A is electrically connected to the first terminal 12A.
- the other end of the first positive conductive path 14A is electrically connected to the voltage conversion unit 13.
- One end of the first negative conductive path 14B is electrically connected to the second terminal 12B.
- the other end of the first negative conductive path 14B is electrically connected to the voltage conversion unit 13.
- the second conductive path 15 is provided between the voltage conversion unit 13 and the battery 11.
- the second conductive path 15 includes a second positive conductive path 15A and a second negative conductive path 15B.
- One end of the second positive conductive path 15A is electrically connected to the high potential terminal of the battery 11.
- the other end of the second positive conductive path 15A is electrically connected to the voltage conversion unit 13.
- One end of the second negative conductive path 15B is electrically connected to the low potential terminal of the battery 11.
- the other end of the second negative conductive path 15B is electrically connected to the voltage conversion unit 13.
- the first positive conductive path 14A and the second positive conductive path 15A constitute the positive conductive path of the conductive path R.
- the first negative conductive path 14B and the second negative conductive path 15B constitute the negative conductive path of the conductive path R.
- the voltage conversion unit 13 converts (specifically, boosts) the voltage applied to the first conductive path 14 and applies it to the second conductive path 15. More specifically, the voltage conversion unit 13 converts the voltage applied between the first positive conductive path 14A and the first negative conductive path 14B and applies it between the second positive conductive path 15A and the second negative conductive path 15B.
- Relay 16 is provided on first positive conductive path 14A.
- Relay 17 is provided on first negative conductive path 14B.
- Relays 16 and 17 allow current to flow between inlet 12 and voltage conversion unit 13 when in the on state.
- Relays 16 and 17 block current from flowing between inlet 12 and voltage conversion unit 13 when in the off state.
- Relays 16 and 17 may be mechanical relays with contacts, or may be semiconductor relays formed by semiconductor switching elements.
- the reference conductive path 19 is electrically connected to the vehicle body 18.
- the reference conductive path 19 is electrically connected to the connection portion 12C of the inlet 12.
- the reference conductive path 19 is electrically connected to the protective earth wire 87 when the mating connection portion 83 of the charging device 80 is connected to the connection portion 12C. This electrically connects the vehicle body 18 to the protective earth wire 87.
- the control unit 20 controls the voltage conversion unit 13 and the relays 16 and 17.
- the control unit 20 includes, for example, a microcomputer.
- the control unit 20 is configured, for example, as an MCU (Micro Controller Unit).
- the control unit 20 includes an information processing unit such as a CPU, and a storage unit such as a ROM or RAM.
- the control unit 20 controls the relays 16 and 17 to be in the off state while stopping the voltage conversion unit 13.
- the control unit 20 switches the relays 16 and 17 to the on state and causes the voltage conversion unit 13 to perform a conversion operation.
- the control unit 20 boosts the voltage of 400V applied to the first conductive path 14 to 800V and applies it to the second conductive path 15. This supplies 800V of power to the battery 11.
- the control unit 20 determines whether the plug of the charging device 80 is connected to the inlet 12, for example, based on a signal from the charging device 80.
- the vehicle body 18 when the battery 11 is charged by the charging device 80, the vehicle body 18 is electrically connected to the protective earth wire 87. Therefore, even if a ground fault occurs, it is possible to prevent a person who touches the vehicle body 18 from receiving an electric shock.
- the boosted voltage is supplied to the positive supply path 85 and the negative supply path 86 of the charging device 80 via the first conductive path 14. In this case, an unexpected overvoltage may be applied to the first SPD 88 and the second SPD 89, which may cause them to malfunction.
- the negative supply path 86 may be short-circuited to the protective earth wire 87 via the second SPD 89. If the negative supply path 86 is short-circuited to the protective earth wire 87, an unexpected large current may flow through the protective earth wire 87, which may cause the protective earth wire 87 to melt.
- the purpose of the vehicle-mounted cutoff device 30 is to quickly cut off the power path in such a situation before the protective earth wire 87 melts.
- the vehicle-mounted circuit breaker 30 is a device mounted on the vehicle 10. When a ground fault occurs in the conductive path R, the vehicle-mounted circuit breaker 30 cuts off the current flowing through the conductive path R.
- the vehicle-mounted circuit breaker 30 has circuit breakers 31, 32, current detectors 33, 34, a switching unit 35, a comparison unit 36, and drive units 37, 38.
- the interrupter 31 is provided on the first positive conductive path 14A.
- the interrupter 32 is provided on the first negative conductive path 14B.
- the interrupters 31 and 32 switch from a permissive state to a blocked state in response to the input of a drive signal.
- the permissive state is a state in which current is permitted to flow through the first conductive path 14.
- the blocked state is a state in which current is blocked from flowing through the first conductive path 14.
- the interrupter 31 may be configured to be unable to return to the permissive state after being in the blocked state, or may be configured to be able to return to the permissive state.
- the unrecoverable configuration may be, for example, a pyrotechnic circuit breaker (e.g., a pyro-fuse (PYROFUSE (registered trademark))) that physically cuts off the first conductive path 14 in response to the input of a drive signal.
- the recoverable configuration is, for example, a switch.
- the switch may be a mechanical switch having contacts, or a semiconductor switch such as a MOSFET or IGBT.
- the current detection unit 33 detects the current flowing through the first positive conductive path 14A.
- the current detection unit 33 outputs a detection value assuming that the current flowing from the charging device 80 side to the battery 11 side is positive.
- the current detection unit 34 detects the current flowing through the first negative conductive path 14B.
- the current detection unit 34 outputs a detection value assuming that the current flowing from the battery 11 side to the charging device 80 side is positive.
- the detection values of the current detection units 33 and 34 are input to the comparison unit 36.
- the current detection units 33 and 34 may be of a non-contact type that is arranged in a non-contact manner with the first conductive path 14, or may be of a contact type that is arranged in contact with the first conductive path 14.
- the non-contact type is, for example, constituted by a magnetic sensor such as a Hall element.
- the contact type is, for example, constituted by a shunt resistor and a differential amplifier that amplifies and outputs the voltage across the shunt resistor.
- the switching unit 35 switches the interrupting units 31 and 32 to the interrupted state based on the comparison result (difference in this embodiment) between the current flowing through the first positive electrode side conductive path 14A and the current flowing through the first negative electrode side conductive path 14B.
- the switching unit 35 has a comparison unit 36 and drive units 37 and 38.
- the comparison unit 36 compares the current flowing through the first positive conductive path 14A with the current flowing through the first negative conductive path 14B. Specifically, the comparison unit 36 calculates the difference between the value of the current flowing through the first positive conductive path 14A and the value of the current flowing through the first negative conductive path 14B. The comparison unit 36 determines whether the calculated difference exceeds a predetermined threshold value. If the comparison unit 36 determines that the difference exceeds the threshold value, it outputs an instruction signal to the drive units 37 and 38. If the comparison unit 36 determines that the difference does not exceed the threshold value, it does not output an instruction signal.
- the drive unit 37 When an instruction signal is input, the drive unit 37 outputs a drive signal to switch the cutoff unit 31 to the cut-off state.
- the drive unit 38 When an instruction signal is input, the drive unit 38 outputs a drive signal to switch the cutoff unit 32 to the cut-off state.
- the vehicle-mounted circuit breaker 30 operates as follows. When the relays 16 and 17 are switched to the on state and the voltage conversion unit 13 performs a boost operation, power is supplied from the charging device 80 to the battery 11. At this time, current flows from the charging device 80 to the battery 11 through the first positive electrode side conductive path 14A and the second positive electrode side conductive path 15A, and current flows from the battery 11 to the charging device 80 through the first negative electrode side conductive path 14B and the second negative electrode side conductive path 15B.
- the comparison unit 36 determines that the difference between the current flowing through the first positive conductive path 14A and the current flowing through the first negative conductive path 14B does not exceed the threshold value, and does not output an instruction signal. As a result, the interrupters 31 and 32 are maintained in an allowable state.
- the comparison unit 36 determines that the difference between the current flowing through the first negative conductive path 14B and the current flowing through the first positive conductive path 14A (in this embodiment, the difference obtained by subtracting the current flowing through the first positive conductive path 14A from the current flowing through the first negative conductive path 14B) exceeds the threshold value, it outputs an instruction signal.
- the drive unit 37 switches the interrupter 31 to the interrupted state, and the drive unit 38 switches the interrupter 32 to the interrupted state. This causes the current flowing through the first conductive path 14 to be interrupted.
- the vehicle-mounted circuit breaker 30 when a ground fault occurs in the second conductive path 15 during a charging operation in which the input voltage from the charging device 80 side is boosted by the voltage conversion unit 13 to charge the battery 11, a difference occurs between the current flowing through the first positive conductive path 14A and the current flowing through the first negative conductive path 14B.
- the vehicle-mounted circuit breaker 30 can switch the circuit breakers 31, 32 to a cut-off state based on the difference between the current flowing through the first negative conductive path 14B and the current flowing through the first positive conductive path 14A.
- the vehicle-mounted circuit breaker 30 can quickly cut off the current flowing through the conductive path R when a ground fault occurs while the battery 11 is being charged.
- the switching unit 35 switches the interrupting units 31, 32 to the interrupted state when the difference between the current flowing through the first negative-electrode-side conductive path 14B and the current flowing through the first positive-electrode-side conductive path 14A exceeds a threshold value.
- a configuration will be described in which the switching unit 35 switches the interrupting units 31, 32 to the interrupted state when the integral value of the difference over a predetermined period of time exceeds a threshold value. Note that the configuration of the second embodiment is the same as that shown in Fig. 1, and therefore will be described with reference to Fig. 1.
- the switching unit 35 of the vehicle-mounted circuit breaker 30 of the second embodiment switches the circuit breakers 31, 32 to the circuit breaker state when the integral value of the difference between the current flowing through the first negative conductive path 14B and the current flowing through the first positive conductive path 14A (in this embodiment, the difference obtained by subtracting the current flowing through the first negative conductive path 14B from the current flowing through the first positive conductive path 14A) over a predetermined period of time exceeds a threshold value.
- the comparison unit 36 calculates the integral value of the difference between the current flowing through the first negative electrode side conductive path 14B and the current flowing through the first positive electrode side conductive path 14A during a predetermined period.
- the predetermined period may be, for example, the most recent fixed time, or the period from when the measurement start condition is met.
- the measurement start condition may be, for example, that the current flowing through the conductive path R (for example, the current detected by the current detection unit 33 or the current detected by the current detection unit 34) exceeds a predetermined measurement start current.
- the measurement start current is preferably a current that can flow without problems as a direct current, for example, a current that can be tolerated by the first SPD 88 and the second SPD 89.
- the measurement start condition may be that the increase in the difference between the current flowing through the first negative-electrode side conductive path 14B and the current flowing through the first positive-electrode side conductive path 14A exceeds a judgment value.
- the comparison unit 36 calculates the above difference for each predetermined judgment period, calculates the increase in the above difference for each judgment period, and judges whether the calculated increase exceeds the judgment value.
- the predetermined period that starts when the measurement start condition is met may end when the measurement end condition is met. In other words, when the measurement end condition is met, the integral value may be cleared.
- the measurement end condition may be, for example, that the current flowing through the conductive path R (for example, the current detected by the current detection unit 33 or the current detected by the current detection unit 34) falls below a predetermined measurement end current.
- the measurement end current may be the same as the measurement start current or may be different.
- the comparison unit 36 determines whether the calculated integral value exceeds the threshold value. If the comparison unit 36 determines that the integral value exceeds the threshold value, it outputs an instruction signal to the drive units 37 and 38. If the comparison unit 36 determines that the integral value does not exceed the threshold value, it does not output an instruction signal.
- the drive unit 37 When an instruction signal is input, the drive unit 37 outputs a drive signal to switch the cutoff unit 31 to the cut-off state.
- the drive unit 38 When an instruction signal is input, the drive unit 38 outputs a drive signal to switch the cutoff unit 32 to the cut-off state.
- the current flowing through the first SPD 88 and the second SPD 89 varies greatly depending on the voltage applied across both ends. For this reason, it is preferable that the interrupting units 31, 32 are interrupted at or below the allowable loss of the first SPD 88 and the second SPD 89.
- the vehicle-mounted interrupting device 30 of the second embodiment can interrupt the current flowing through the first conductive path 14 and the second conductive path 15 before the first SPD 88 and the second SPD 89 fail when the threshold is set to be equal to or below the allowable loss of the first SPD 88 and the second SPD 89.
- the switching unit 35 switches the interrupting units 31, 32 to the interrupted state when the difference between the current flowing through the first negative-side conductive path 14B and the current flowing through the first positive-side conductive path 14A exceeds a threshold value.
- a configuration will be described in which the switching unit 35 switches the interrupting units 31, 32 to the interrupted state when the integral value of the square of the difference over a predetermined period of time exceeds a threshold value. Note that the configuration of the third embodiment is the same as that shown in Fig. 1, and therefore will be described with reference to Fig. 1.
- the switching unit 35 of the vehicle-mounted circuit breaker 30 of the third embodiment switches the circuit breakers 31, 32 to the circuit breaker state when the integral value of the square of the difference between the current flowing through the first negative conductive path 14B and the current flowing through the first positive conductive path 14A (in this embodiment, the difference obtained by subtracting the current flowing through the first negative conductive path 14B from the current flowing through the first positive conductive path 14A) over a specified period of time exceeds a threshold value.
- the comparison unit 36 calculates the integral value of the square of the difference between the current flowing through the first negative electrode side conductive path 14B and the current flowing through the first positive electrode side conductive path 14A during a predetermined period.
- the predetermined period may be, for example, the most recent fixed time, or the period from when the measurement start condition is met.
- the measurement start condition may be, for example, that the current flowing through the conductive path R (for example, the current detected by the current detection unit 33 or the current detected by the current detection unit 34) exceeds a predetermined measurement start current.
- the measurement start current is preferably a current that is safe to flow as a direct current, for example, a current that does not cause the protective earth wire 87 to emit smoke.
- the measurement start condition may be that the increase in the difference between the current flowing through the first negative-electrode side conductive path 14B and the current flowing through the first positive-electrode side conductive path 14A exceeds a judgment value.
- the comparison unit 36 calculates the above difference for each predetermined judgment period, calculates the increase in the above difference for each judgment period, and judges whether the calculated increase exceeds the judgment value.
- the predetermined period that starts when the measurement start condition is met may end when the measurement end condition is met. In other words, when the measurement end condition is met, the integral value may be cleared.
- the measurement end condition may be, for example, that the current flowing through the conductive path R (for example, the current detected by the current detection unit 33 or the current detected by the current detection unit 34) falls below a predetermined measurement end current.
- the measurement end current may be the same as the measurement start current or may be different.
- the comparison unit 36 determines whether the calculated integral value exceeds the threshold value. If the comparison unit 36 determines that the integral value exceeds the threshold value, it outputs an instruction signal to the drive units 37 and 38. If the comparison unit 36 determines that the integral value does not exceed the threshold value, it does not output an instruction signal.
- the drive unit 37 When an instruction signal is input, the drive unit 37 outputs a drive signal to switch the cutoff unit 31 to the cut-off state.
- the drive unit 38 When an instruction signal is input, the drive unit 38 outputs a drive signal to switch the cutoff unit 32 to the cut-off state.
- the vehicle-mounted circuit breaker 30 of the third embodiment can cut off the current flowing through the first conductive path 14 and the second conductive path 15 before the protective earth wire 87 starts to smoke, when the threshold is set so that the protective earth wire 87 does not start to smoke.
- the switching unit 35 switches the interrupting units 31, 32 to the interrupted state when the difference between the current flowing through the first negative-electrode-side conductive path 14B and the current flowing through the first positive-electrode-side conductive path 14A exceeds a threshold value.
- a configuration is described in which the interrupting units 31, 32 are switched to the interrupted state based on a temperature Tw calculated using the difference. Note that the configuration of the fourth embodiment is the same as the configuration shown in Fig. 1, and therefore will be described with reference to Fig. 1.
- the switching unit 35 of the vehicle-mounted cutoff device 30 of the fourth embodiment switches the cutoff units 31 and 32 to the cutoff state when Tw calculated by the following formula (A) exceeds a threshold value.
- ⁇ I(n) is the difference in the nth detection (in this embodiment, the difference obtained by subtracting the current flowing through the first positive electrode side conductive path 14A from the current flowing through the first negative electrode side conductive path 14B).
- n is an integer of 1 or more.
- ⁇ t is the unit time for detecting the difference.
- ⁇ w is the heat dissipation time constant (s) of the first conductive path 14.
- Rthw is the thermal resistance of the first conductive path 14 (° C./W).
- Rw(0) is the resistance ( ⁇ ) of the first conductive path 14 at temperature To.
- ⁇ w is the temperature coefficient of resistance (/° C.) of the first conductive path 14.
- ⁇ Tw(n) corresponds to the replacement of I(n) with the above ⁇ I(n) in formula 1 disclosed in paragraph 0032 of JP2009-130944A.
- the vehicle-mounted cutoff device 30 of the fourth embodiment can switch the cutoff units 31 and 32 to the cutoff state when Tw calculated using the above difference exceeds a threshold value.
- the transfer target is the charging device 80, but it may be another device.
- the transfer target may be a device mounted on the vehicle 10.
- the transfer target may be a device (e.g., a load) that receives power from the battery 11.
- the interrupters 31, 32 are provided on both the first positive conductive path 14A and the first negative conductive path 14B, but they may be provided on only one of them.
- the switching unit 35 is configured to switch the interrupting units 31 and 32 to the interrupted state when the difference between the current flowing through the first negative side conductive path 14B and the current flowing through the first positive side conductive path 14A exceeds a threshold value.
- the switching unit 35 may be configured to switch the interrupting units 31 and 32 to the interrupted state when the difference between the current flowing through the first positive side conductive path 14A and the current flowing through the first negative side conductive path 14B exceeds a threshold value.
- the switching unit 35 may also be configured to switch the interrupting units 31 and 32 to the interrupted state when either the difference between the current flowing through the first negative side conductive path 14B and the current flowing through the first positive side conductive path 14A and the current flowing through the first positive side conductive path 14A and the current flowing through the first negative side conductive path 14B exceeds a threshold value.
- the switching unit 35 is configured to switch the interrupting units 31 and 32 to the interrupted state when the integral value of the difference between the current flowing through the first negative side conductive path 14B and the current flowing through the first positive side conductive path 14A exceeds a threshold value over a predetermined period.
- the switching unit 35 may be configured to switch the interrupting units 31 and 32 to the interrupted state when the integral value of the difference between the current flowing through the first positive side conductive path 14A and the current flowing through the first negative side conductive path 14B exceeds a threshold value over a predetermined period.
- the switching unit 35 may also be configured to switch the interrupting units 31 and 32 to the interrupted state when either the integral value of the difference between the current flowing through the first negative side conductive path 14B and the current flowing through the first positive side conductive path 14A exceeds a threshold value over a predetermined period.
- the switching unit 35 is configured to switch the interrupting units 31 and 32 to the interrupted state when the integral over a predetermined period of the square of the difference between the current flowing through the first negative side conductive path 14B and the current flowing through the first positive side conductive path 14A exceeds a threshold value.
- the switching unit 35 may be configured to switch the interrupting units 31 and 32 to the interrupted state when the integral over a predetermined period of the square of the difference between the current flowing through the first positive side conductive path 14A and the current flowing through the first negative side conductive path 14B exceeds a threshold value.
- the switching unit 35 may be configured to switch the interrupting units 31 and 32 to the interrupted state when either the integral value, over a predetermined period, of the square of the difference between the current flowing through the first negative side conductive path 14B and the current flowing through the first positive side conductive path 14A, or the integral value, over a predetermined period, of the square of the difference between the current flowing through the first positive side conductive path 14A and the current flowing through the first negative side conductive path 14B, exceeds a threshold value.
- Tw is calculated using the difference between the current flowing through the first negative side conductive path 14B and the current flowing through the first positive side conductive path 14A.
- Tw may be calculated using the difference between the current flowing through the first positive side conductive path 14A and the current flowing through the first negative side conductive path 14B.
- Tw may also include Tw1 calculated using the difference between the current flowing through the first negative side conductive path 14B and the current flowing through the first positive side conductive path 14A, and Tw2 calculated using the difference between the current flowing through the first positive side conductive path 14A and the current flowing through the first negative side conductive path 14B.
- the switching unit 35 may be configured to switch the interrupting units 31 and 32 to the interrupted state when either Tw1 or Tw2 exceeds a threshold value.
- Charging device transmitting/receiving object
- first mating terminal 82...second mating terminal 83...mating connection portion 84...charger 85...positive supply path 86...negative supply path 87...protective ground line 88...first SPD 89...Second SPD R...conductive path
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
蓄電部と、前記蓄電部との間で電力を授受する授受対象と前記蓄電部との間に設けられる導電路とを備える車両に搭載される車載用遮断装置であって、
前記導電路に設けられ、前記導電路に電流が流れることを許容する許容状態から遮断状態に切り替わる遮断部と、
前記導電路に含まれる正極側導電路を流れる電流と前記導電路に含まれる負極側導電路を流れる電流との比較結果に基づいて前記遮断部を前記遮断状態に切り替える切替部と、を有する。
以下では、本開示に係る実施形態が列記されて例示される。
前記導電路に設けられ、前記導電路に電流が流れることを許容する許容状態から遮断状態に切り替わる遮断部と、
前記導電路に含まれる正極側導電路を流れる電流と前記導電路に含まれる負極側導電路を流れる電流との比較結果に基づいて前記遮断部を前記遮断状態に切り替える切替部と、を有する
車載用遮断装置。
〔1〕に記載の車載用遮断装置。
〔2〕に記載の車載用遮断装置。
〔2〕に記載の車載用遮断装置。
〔2〕に記載の車載用遮断装置。
〔2〕に記載の車載用遮断装置。
Tw=基準温度+ΔTw(n) ・・・式(A)
ΔTw(n)=ΔTw(n-1)×exp(-Δt/τw)+Rthw×Rw(n-1)×ΔI(n-1)2×(1-exp(-Δt/τw))。
ΔI(n)は、検出n回目の前記差。
nは、1以上の整数。
Δtは、前記差を検出する単位時間。
τwは、前記導電路の放熱時定数(s)。
Rthwは、前記導電路の熱抵抗(℃/W)。
Rw(n)は、検出n回時の前記導電路の抵抗(Ω)。Rw(n)=Rw(0)×(1+κw×(Tw-To))。
Rw(0)は、温度Toでの前記導電路の抵抗(Ω)。
κwは、前記導電路の抵抗温度係数(/℃)。
前記車両は、前記インレットと前記蓄電部との間に設けられ前記インレット側から入力された電圧を昇圧して前記蓄電部側に出力する電圧変換部を備え、
前記導電路は、前記インレットと前記電圧変換部との間に設けられる第1導電路と、前記電圧変換部と前記蓄電部との間に設けられる第2導電路と、を有し、
前記第1導電路は、前記正極側導電路の一部である第1正極側導電路と、前記負極側導電路の一部である第1負極側導電路と、を含み、
前記切替部は、前記第1正極側導電路を流れる電流と前記第1負極側導電路を流れる電流との比較結果に基づいて前記遮断部を前記遮断状態に切り替える
〔1〕から〔6〕のいずれか一つに記載の車載用遮断装置。
<第1実施形態>
図1には、車載用遮断装置30を含む車両10と充電装置80が示されている。車両10は、バッテリ11を動力源として走行する車両であり、例えば電気自動車である。バッテリ11は、車両10外部の充電装置80によって充電される。
第1実施形態では、切替部35が第1負極側導電路14Bを流れる電流と第1正極側導電路14Aを流れる電流との差が閾値を超えたときに遮断部31,32を遮断状態に切り替える構成であった。これに対し、第2実施形態では、切替部35が所定期間における上記差の積分値が閾値を超えたときに遮断部31,32を遮断状態に切り替える構成について説明する。なお、第2実施形態の構成は、図1に示す構成と同じであるため、図1を参照して説明する。
第1実施形態では、切替部35が第1負極側導電路14Bを流れる電流と第1正極側導電路14Aを流れる電流との差が閾値を超えたときに遮断部31,32を遮断状態に切り替える構成であった。これに対し、第3実施形態では、切替部35が所定期間における上記差の二乗の積分値が閾値を超えたときに遮断部31,32を遮断状態に切り替える構成について説明する。なお、第3実施形態の構成は、図1に示す構成と同じであるため、図1を参照して説明する。
第1実施形態では、切替部35が第1負極側導電路14Bを流れる電流と第1正極側導電路14Aを流れる電流との差が閾値を超えたときに遮断部31,32を遮断状態に切り替える構成であった。これに対し、第4実施形態では、上記差を用いて算出される温度Twに基づいて遮断部31,32を遮断状態に切り替える構成について説明する。なお、第4実施形態の構成は、図1に示す構成と同じであるため、図1を参照して説明する。
Tw=基準温度+ΔTw(n) ・・・式(A)
ΔTw(n)=ΔTw(n-1)×exp(-Δt/τw)+Rthw×Rw(n-1)×ΔI(n-1)2×(1-exp(-Δt/τw))。
ΔI(n)は、検出n回目の上記差(本実施形態では、第1負極側導電路14Bを流れる電流から第1正極側導電路14Aを流れる電流を差し引いた差)。
nは、1以上の整数。
Δtは、上記差を検出する単位時間。
τwは、第1導電路14の放熱時定数(s)。
Rthwは、第1導電路14の熱抵抗(℃/W)。
Rw(n)は、検出n回時の第1導電路14の抵抗(Ω)。Rw(n)=Rw(0)×(1+κw×(Tw-To))。
Rw(0)は、温度Toでの第1導電路14の抵抗(Ω)。
κwは、第1導電路14の抵抗温度係数(/℃)。
本開示は、上記記述及び図面によって説明した実施形態に限定されるものではない。例えば、上述又は後述の実施形態の特徴は、矛盾しない範囲であらゆる組み合わせが可能である。また、上述又は後述の実施形態のいずれの特徴も、必須のものとして明示されていなければ省略することもできる。更に、上述した実施形態は、次のように変更されてもよい。
11…バッテリ(蓄電部)
12…インレット
12A…第1端子
12B…第2端子
12C…接続部
13…電圧変換部
14…第1導電路
14A…第1正極側導電路(正極側導電路)
14B…第1負極側導電路(負極側導電路)
15…第2導電路
15A…第2正極側導電路(正極側導電路)
15B…第2負極側導電路(負極側導電路)
16…リレー
17…リレー
18…車体
19…基準導電路
20…制御部
30…車載用遮断装置
31…遮断部
32…遮断部
33…電流検出部
34…電流検出部
35…切替部
36…比較部
37…駆動部
38…駆動部
80…充電装置(授受対象)
81…第1相手側端子
82…第2相手側端子
83…相手側接続部
84…充電器
85…正極側供給路
86…負極側供給路
87…保護接地線
88…第1SPD
89…第2SPD
R…導電路
Claims (7)
- 蓄電部と、前記蓄電部との間で電力を授受する授受対象と前記蓄電部との間に設けられる導電路とを備える車両に搭載される車載用遮断装置であって、
前記導電路に設けられ、前記導電路に電流が流れることを許容する許容状態から遮断状態に切り替わる遮断部と、
前記導電路に含まれる正極側導電路を流れる電流と前記導電路に含まれる負極側導電路を流れる電流との比較結果に基づいて前記遮断部を前記遮断状態に切り替える切替部と、を有する
車載用遮断装置。 - 前記切替部は、前記正極側導電路を流れる電流と前記負極側導電路を流れる電流との差に基づいて前記遮断部を前記遮断状態に切り替える
請求項1に記載の車載用遮断装置。 - 前記切替部は、前記差が閾値を超えたときに前記遮断部を前記遮断状態に切り替える
請求項2に記載の車載用遮断装置。 - 前記切替部は、所定期間における前記差の積分値が閾値を超えたときに前記遮断部を前記遮断状態に切り替える
請求項2に記載の車載用遮断装置。 - 前記切替部は、所定期間における前記差の二乗の積分値が閾値を超えたときに前記遮断部を前記遮断状態に切り替える
請求項2に記載の車載用遮断装置。 - 前記切替部は、以下の式(A)によって算出されるTwが閾値を超えたときに前記遮断部を前記遮断状態に切り替える
請求項2に記載の車載用遮断装置。
Tw=基準温度+ΔTw(n) ・・・式(A)
ΔTw(n)=ΔTw(n-1)×exp(-Δt/τw)+Rthw×Rw(n-1)×ΔI(n-1)2×(1-exp(-Δt/τw))。
ΔI(n)は、検出n回目の前記差。
nは、1以上の整数。
Δtは、前記差を検出する単位時間。
τwは、前記導電路の放熱時定数(s)。
Rthwは、前記導電路の熱抵抗(℃/W)。
Rw(n)は、検出n回時の前記導電路の抵抗(Ω)。Rw(n)=Rw(0)×(1+κw×(Tw-To))。
Rw(0)は、温度Toでの前記導電路の抵抗(Ω)。
κwは、前記導電路の抵抗温度係数(/℃)。 - 前記授受対象は、前記車両のインレットに接続される充電装置であり、
前記車両は、前記インレットと前記蓄電部との間に設けられ前記インレット側から入力された電圧を昇圧して前記蓄電部側に出力する電圧変換部を備え、
前記導電路は、前記インレットと前記電圧変換部との間に設けられる第1導電路と、前記電圧変換部と前記蓄電部との間に設けられる第2導電路と、を有し、
前記第1導電路は、前記正極側導電路の一部である第1正極側導電路と、前記負極側導電路の一部である第1負極側導電路と、を含み、
前記切替部は、前記第1正極側導電路を流れる電流と前記第1負極側導電路を流れる電流との比較結果に基づいて前記遮断部を前記遮断状態に切り替える
請求項1から請求項6のいずれか一項に記載の車載用遮断装置。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380097848.8A CN121127758A (zh) | 2023-05-09 | 2023-05-09 | 车载用切断装置 |
| PCT/JP2023/017370 WO2024232000A1 (ja) | 2023-05-09 | 2023-05-09 | 車載用遮断装置 |
| JP2025519217A JPWO2024232000A1 (ja) | 2023-05-09 | 2023-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2023/017370 WO2024232000A1 (ja) | 2023-05-09 | 2023-05-09 | 車載用遮断装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024232000A1 true WO2024232000A1 (ja) | 2024-11-14 |
Family
ID=93431468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/017370 Ceased WO2024232000A1 (ja) | 2023-05-09 | 2023-05-09 | 車載用遮断装置 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2024232000A1 (ja) |
| CN (1) | CN121127758A (ja) |
| WO (1) | WO2024232000A1 (ja) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013042216A1 (ja) * | 2011-09-21 | 2013-03-28 | トヨタ自動車株式会社 | 電動車両の充電システムおよび充電制御方法 |
| JP2014023236A (ja) * | 2012-07-17 | 2014-02-03 | Toyota Motor Corp | 充電監視装置 |
| JP2015027220A (ja) * | 2013-07-29 | 2015-02-05 | 三菱自動車工業株式会社 | 車両の暖機制御装置 |
| WO2015118631A1 (ja) * | 2014-02-05 | 2015-08-13 | 三菱電機株式会社 | 車載充電器、車載充電器におけるサージ抑制方法 |
| JP2016203797A (ja) * | 2015-04-22 | 2016-12-08 | 株式会社オートネットワーク技術研究所 | 電力供給装置及び電力供給システム |
| US20170036555A1 (en) * | 2015-08-05 | 2017-02-09 | GM Global Technology Operations LLC | Transformerless, current-isolated onboard charger with solid-state switching controls |
| JP2018091626A (ja) * | 2015-04-16 | 2018-06-14 | パナソニックIpマネジメント株式会社 | 漏電検出装置 |
| JP2020165680A (ja) * | 2019-03-28 | 2020-10-08 | ダイハツ工業株式会社 | プラズマリアクターシステム |
-
2023
- 2023-05-09 WO PCT/JP2023/017370 patent/WO2024232000A1/ja not_active Ceased
- 2023-05-09 JP JP2025519217A patent/JPWO2024232000A1/ja active Pending
- 2023-05-09 CN CN202380097848.8A patent/CN121127758A/zh active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013042216A1 (ja) * | 2011-09-21 | 2013-03-28 | トヨタ自動車株式会社 | 電動車両の充電システムおよび充電制御方法 |
| JP2014023236A (ja) * | 2012-07-17 | 2014-02-03 | Toyota Motor Corp | 充電監視装置 |
| JP2015027220A (ja) * | 2013-07-29 | 2015-02-05 | 三菱自動車工業株式会社 | 車両の暖機制御装置 |
| WO2015118631A1 (ja) * | 2014-02-05 | 2015-08-13 | 三菱電機株式会社 | 車載充電器、車載充電器におけるサージ抑制方法 |
| JP2018091626A (ja) * | 2015-04-16 | 2018-06-14 | パナソニックIpマネジメント株式会社 | 漏電検出装置 |
| JP2016203797A (ja) * | 2015-04-22 | 2016-12-08 | 株式会社オートネットワーク技術研究所 | 電力供給装置及び電力供給システム |
| US20170036555A1 (en) * | 2015-08-05 | 2017-02-09 | GM Global Technology Operations LLC | Transformerless, current-isolated onboard charger with solid-state switching controls |
| JP2020165680A (ja) * | 2019-03-28 | 2020-10-08 | ダイハツ工業株式会社 | プラズマリアクターシステム |
Also Published As
| Publication number | Publication date |
|---|---|
| CN121127758A (zh) | 2025-12-12 |
| JPWO2024232000A1 (ja) | 2024-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11440412B2 (en) | Disconnection device for a high-voltage electrical system of a motor vehicle, high-voltage electrical system, and motor vehicle | |
| US11677232B2 (en) | Quick battery disconnect system for high current circuits | |
| US11220183B2 (en) | Battery management device and power supply system | |
| JP5464372B2 (ja) | インターロックスイッチを用いたプレチャージ抵抗保護回路装置 | |
| CN108604809B (zh) | 继电器装置以及电源装置 | |
| US9806545B2 (en) | Battery management system, motor vehicle and battery module | |
| CN112644284B (zh) | 汽车电器网络以及用于运行这种汽车电器网络的方法 | |
| JP2010183679A (ja) | バッテリシステム | |
| JP7613247B2 (ja) | 車載用切替装置 | |
| KR102786652B1 (ko) | 충전 스테이션 배리스터에 의해 야기된 결함 전류를 차단하기 위해 트랜지스터와 역 다이오드를 포함하는 dc 차량 충전 회로 | |
| CN115732867A (zh) | 一种电池系统短路保护电路及一种新能源车辆 | |
| WO2022176592A1 (ja) | 車載用切替装置 | |
| US20150180091A1 (en) | Accumulator battery protected against external short-circuits | |
| CN117858822A (zh) | 车辆用电源系统 | |
| JP5188370B2 (ja) | バッテリシステム | |
| CN212828208U (zh) | 用于自动驾驶车辆的电路系统,自动驾驶车辆 | |
| CN121127758A (zh) | 车载用切断装置 | |
| WO2024185068A1 (ja) | 車載用遮断装置 | |
| JP7769893B2 (ja) | 車載用遮断制御装置 | |
| US20260054574A1 (en) | Motor controller, distributed powertrain, and vehicle | |
| WO2025238168A1 (en) | A battery assembly and a method for controlling a battery assembly | |
| US20240204505A1 (en) | Overcurrent protection device and charging device | |
| KR20260054944A (ko) | Pra 시스템 | |
| WO2025215741A1 (ja) | 車載用制御装置 | |
| JP2000255254A5 (ja) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23936554 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2025519217 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025519217 Country of ref document: JP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 23936554 Country of ref document: EP Kind code of ref document: A1 |